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If ""^nC10= ""^nC12 then find ""^23Cn....

If `""^nC_10= ""^nC_12` then find `""^23C_n`.

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KUMAR PRAKASHAN-PERMUTATIONS AND COMBINATIONS-PRACTICE WORK
  1. If ""nPr=840 and ""^nCr=35, then r is equal to....

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  2. If ""^((n+2)) C8 :"" ^((n-2)) P4= 57 : 16 then find n.

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  3. If ""^nC10= ""^nC12 then find ""^23Cn.

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  4. In how many ways can a football team of 11 players be selected from 16...

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